yes i did, it's the ROLO right?!... and it says..
"Rockbox is able to load and start another firmware file without rebooting. You just “play†a file with the extension .ipod. This can be used to test new firmware versions without deleting your current version"
so this means that i have to download a new firmeware, extract it on my DAP then, what's next?
... i'm sorry but it is really not that clear for me on how use it.